|  |  OEM Subaru Fuel Filter
Subarus vary in their fuel filter configuration. Early WRX models had an under-hood canister. Later models had the fuel filter back in the fuel tank, as shown at left. All pumps also have a "sock" over the intake, which could also be though of as a sort of filter. The sock is not sold separately from the fuel pump.
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|  Underhood Fuel Filter (02-05 WRX)Genuine Subaru part. Fits all 2002-05 WRX. (Not for 2.5 liter cars -- they don't have an under-hood fuel filter.)
| | |  In-Tank Fuel Filter WRX STI and 06-07 WRXLater cars have a fuel filter in the fuel tank, stacked on top of the fuel pump.
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